放電加工におけるパルス単位の電極消耗量の変化に関する研究

極間雰囲気がカーボン付着や消耗量に及ぼす影響

抄録

In this research, the variations of the tool electrode and workpiece removal amounts due to one discharge with the repetition of discharge are investigated experimentally, in order to find out the influence of the variation of atmosphere between two electrodes on the carbon adhesion amount onto the tool electrode surface. It is found from the experimental results that the removal amount of the tool electrode becomes smaller with the atmosphere variation due to the discharge repetition, which is considered to be caused by the increased carbon amount adhered onto the tool electrode surface. Also, the mechanism of carbon adhesion phenomenon, the influence of the electrode shape on the tool electrode wear, the phenomenon of a greater tool electrode wear at corner, and the reason for the variation of the anode and cathode instantaneous removal rate are discussed.